Question

iguanas are living in a relatively dry habitat. imagine a change in the iguanas habitat from dry land to aquatic. based on the generation i allelic frequencies, we can assume only a small percentage of iguanas had webbed feet. predict what should happen to the allelic frequencies within the iguana population over time. a the heterozygous genotype will eventually increase to 100% in the gene pool. b the dominant and recessive alleles will eventually balance out in the population. c the dominant allele will decrease while the recessive will increase in the gene pool. d the recessive allele will begin to mask the effects of the dominant allele over time.

Explanation:

Webbed feet are adaptive in aquatic habitats, so iguanas with webbed feet (likely carrying the allele for this trait) will survive and reproduce more. Assuming webbed feet are controlled by a recessive allele (since initially rare), its frequency increases, while the non-adaptive dominant allele frequency decreases.

Answer:

C. The dominant allele will decrease while the recessive will increase in the gene pool.